I don't think that level of detail is yet leaked. I want it for sure, but I'm not certain as to how many buyers would value it. I'd think twice about a R5 is it turns out to be missing.
my cheap 70-300 mm nano usm lense wont focus breath at least ,its ok for close ups big insects and flowers.
but there can be copy variation ,readed about review where it did focus breath.
I hope there will be better lenses on future couple weeks and we see